I would recommend Breloom. It has a monstrous base 130 attack stat and Mach punch(a good fighting type move) and STAB for it's fighting attacks. Breloom will probably be very useful for the Normal Gym(which have them heavy devils also known as Slaking). Breloom has been very useful for when I played Emerald and 2KOed Normans Slaking. Hopefully this answers your question. Hope I helped!(ish)
